Siphon-blower.



J. L. HOUSTON.

v SIPHON BLOWER.

APPLICATION FILED MAY 1, I9I5. 1,151,464. Patented Aug. 24, 1915.

2 SHEETSSHEET I.

IO N

INVENTOI? M47 M JbhnL. Houston QMg J. L. HOUSTON.

SlPHON BLOWER.

APPLICATION FILED MAY 1915.

1,151,464. Patented Aug; 24, 1915. v 2 SHEETS-SHEET 2. 7.2-; .5.

WITNESSES AAZWM INVE/V 70/? JOHN LAWRENCE HOUSTON, F POUGHKEEPSIE, NEWYORK.

SIPHON-BLOWER.

Application filed May 1,

To all whom it may concern:

Be it known that 1, JOHN L. HoUs'i'ox, a citizen of the United States,and a resident of Poughkeepsie, in the county of Dutcliess and State ofNew York, have invented a new and Improved Siphon-Blower, of which thefollowing is a full, clear, and exact description.

This invention relates to siphon blowers- Specification of Letters:Pateut. PatentcdAug. 24, 1915.

1915. Serial No. 25,281.

Figure 1 is a longitudinal section of a boiler having material removingdevices applied to the ash-pit and to the rear part of the furnace; Fig.2 is a transverse sectional view of the firebox portion of the furnace;Fig.3 is an enlarged sectional view of the material ejector or siphonblower;-Fig. 4 is a plan View with portions ofthe device in section; andFig.6 is a View showing the or material ejector-s especially adapted forbranch discharge conduit whereby ashes can furnaces, econoniizers andthe like, whereby ashes, soot, fine coal and other material can bedischarged quickly, effectively, economically and with a minimum oflabor.

The invention has for its general objects to improve and simplify theconstruction of material removing apparatus of the character referred toso as to be reliable and efiicient in use, comparatively simple andinexpensive to manufacture, install and keep in operative condition, andso designed that I ,fine material can be discharged without caus- 'mgdust to rise, and without undue noise being created bythe operation ofthe ap paratus.

A more specific object of the invention is the provision of a materialdischarging debe removed from thafurnace or fine coal rcturned to thefeed hopper of the'stoker.

Referring to the drawing, 1 designates the masonry work of a furnacewhich is constructed with a fire-box 2 having grate bars 3, and underthe grate bars is an asl1-pan at which slopes to an outlet opening 5. Di

rectly under the ash-pan is the siphon blower or material removingejector A,

whereby ashes can be removed by fluid pres sure. I This device A isconstructed as shown in detail in Figs. 8 and 4, and it consists of ahopper 6 having at its throat 7 a slide valve 8 which is normallyclosed. Under the throat 7 is an ejector chamber 9 connected with'adischarge conduit 10, and in line with this conduit is an ejector tube11 vice which embodies a hopper that receives from which steam, waterand air discharge the material to be discharged, and coiiper underconsiderable force, whereby the matcating with the hopper is an ejectorwhich rial from the hopper (3 is driven out of the utilizes steam as theejecting agent, and "in conduit 10 when the valve 8 'ls opened. additionwater is caused to flow through tlie-f llh ejector tube 11 is connectedwith a couejector by the action of the steam, whereliy/pling 12 whichforms the body of the ejecthe material is moistened so that'dust isp'ftor, and connected with this coupling is a vented from rising, and inorder to avoid steam/simply pipe 13. Extending through undue noise anair vent pipe isconnccted able force.

A further object of the invention is the application of a materialremoving device of the character referred to, to a furnace for i thedouble purpose of removing the ashes and for returning the fine coalthat sifts through the grate bars to the hopper or bin from which coalis fed automatically to the grate bars in the operation of the furnace.

In the accompanying drawings, which illustrate one embodiment oftheinvention,

i and wherein similar characters of reference indicate correspondingparts in all the views,

(irawnthe coupling is a straight suction tube 14 'arranged coaxiallywith the ejector tube 11,

but'it is ofismaller diameter than the latter, so that an annular steampassage 13 is provided through which steam passes so as to create asuction at the end 15 of the tube 14. This tube is connected by a. pipe16 with a source of water which may be under a head of six inches or afoot, so that water tends to How bygravity to the ejector, or which maybe disposed below the level of the ejector so that the latter will suckthe water from the said source. The Water tube of the ejector isconnected with an air pipe 17 which has its upper end above the top ofthe tank of Water, so that water cannot iiow out when the device is notin operation, and bymeans of this air pipe air is sucked into theejector, and as a consequence timepparatus will op crate almostnoiselessly, and as the water flows to the device by suction or only aslight head, suiiicient water will be utilized to moisten the materialbeing removed, to such an extent that the material will freely flowthrough the discharge conduit without slide valve 8 is shown connectedby a link 18 with an operating lever 19, whereby the fireman canconveniently operate the slide valve, and in the steam pipe 13 may beprovided a cut-oli valve 20, which valve is normally closed and isadapted to be opened only when the ashes are to be removed. As

-.shown in Fig. 2 the water tank .21 is'disposed above the ejectingdevice A, and the air pipe 1? has its upper open end disposed above thetop of the tank.

It may be desirable to use the ejecting apparatus A for returning to thehop-per of the furnace stoker the fine coal that Sifts through the gratebars 3, and-for this purpose the pan 4 is extended upwardly to the sideWalls of the furnace, and swinging valves or gates 22 are hingedlymounted in the pan at points adjacent the bottom of the grate bars, sothat when the valves are in the normal or full-line position shown inFig. 2, the fine coal that sifts through the grate bars will becollected and not mixed with the ashes passing by the clinker bar 23.-After the ashes have been removed by the ejecting device the gates orvalves 22 can be opened so that the fine coal'Will pass to the hopper ofthe ejecting device, which can be operated to discharge the fine coalback into the bin B of the Stoker. F or this reason the dischargeconduit 10 will be provided with two branches 10 and 10, Fig. 5, fordischarging" ashes and coal respectively, the branch 10 leading upwardlyto the top of the hopper or bin for the stoker of the furnace. A gate orvalve 10 is operated by a handle 25, Fig. 1, so as to connect eitherbranch pipe with the ejecting device A.

The ejecting devices of the character referred to can be used in otherplaces in the furnace or in economizers and similar apparatus where sootcollects. Thus, in Fig. l a soot removing device C is arranged in therear part of the furnace under the water This ejecting device is of thesame construction the one previously described, and it receives steamfrom the steam pipe extension 13' controlled by a valve 13. A pan 6catches the soot and other deposits. and under this pan is located theejecting device which has a discharge with a drain opening 25 for thepurpose of permitting water ofcondensation to drain off in case thesteam valve should leak or be accidentally left open, it being importantthat the accumulation of water in the ejecting device be prevented, asthe presence of water is apt to wet the material, that drops into thedevice when the slide 8 is open, too

much, so that the discharge conduit will become clogged.

From the foregoing description taken in connection with the accompanyingdrawings, the advantages ofthe construction and method of operation willbe readily understood by those skilled in the art to which the inventionappertains, and while I have described the principle of operation,together with the device which I now consider .to be the best embodimentthereof, I desire to have it understood that the device shown is merelyillustrative and that such changes may be made when desired as fallwithin the scope of the appended claims.

Having thus described my invention, I claim as new and desire to secureby Letters Patent: 1. A loose material removin device com prising anejector chamber, a ischar e conduit leading therefrom, a. hopper t roughwhich material passes to the chamber, 'a. valve between the hopper andchamber, an ejector tube leading into the chamber for. forcing materialtherefrom through the discharge pipe, a steam supply conduit con.-nected with the said tube, a water supply conduit communicating withthe'tube and from which water is sucked by the ejecting action of thesteam, and an air vent pipe v -pipe and having its other end open to theatmosphere, whereby the steam sucks on and water into the ejector.

3. The combination of a furnace grate, an ash collector under the grate,and a steam ejecting device connected with the ash collector forremoving the ashes therefrom, said ejecting device having water and airsupply means whereby water and air are mingled with the steam to formthe motive agent for removing the ashes.

4:. The combination of a furnace grate, an ash pan thereunder, a hopperfor receiving ashes from the said pan, a valve controlling the hopper,and an ejector chamber into which material enters from the hopper, adischarge pipe connected with the chamber, an ejector tube, means forsupplying steam to the said tube, a water conduit extending into thesaid tube and from which water is discharged by the ejector action ofthe steam, and means for introducing air into the water.

5. The combination of a furnace including grate bars, an ash collectingmeans-- thereunder, means for collect ng. coal that" sifts through thegrate bars, a valve between the said means for preventing coal frommixing with the ashes, and an ejector device disposed under the firstmentioned means to remove the ashes therefrom and adapted when the saidvalve is open to remove the coal after the ashes have been removed,

The combination of a furnace having grate bars, means under the lowerportions thereof for collecting ashes, means under the upper portions ofthe grate bars for receiving the coal that sifts through. the gratebars, valves between the said means for keeping the coal and ashesseparated, and an ejector device utilizing steam and water for removingashes from the first-mentioned means and thereafter removing coal fromthe second mentioned means when the valves are opened.

7. In combination, furnace grate bars, means under the same forcollecting ashes, means for collecting coal that sifts through the bars,and a common fluid ejector for removing the ashes and coal separatelyfrom the said means. V

8. In combination, a furnace including grate bars, a coal compartmentfrom which coal feeds to the grate bars, means into which ashesdischarge from the grate bars, means for collecting coal that siftsthrough the grate bars, a valve between the said means, an ejectorcommon to said meansfa discharge pipe through which ashes or coal isdischarged by the ejector, said pipe having branches, one of which leadsto the compartment for returning coal thereto, and a valve controllingthe said branches.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOHN LAWRENCE HOUSTON. Witnesses:

NORMAN OHAMPLIN, DANIEL GORMAN.

